diff options
Diffstat (limited to 'PPM.h')
| -rw-r--r-- | PPM.h | 156 |
1 files changed, 156 insertions, 0 deletions
@@ -0,0 +1,156 @@ +#include <string.h>
+#include "FileIO.h"
+#include "Constants.h"
+
+typedef struct
+{
+ double r; // 0 - 1
+ double g; // 0 - 1
+ double b; // 0 - 1
+} color;
+
+typedef struct
+{
+ //General settings
+ double** map;
+ double** newMap;
+ char* contents;
+ int width;
+ int height;
+ int numFrames;
+ int frameNumber;
+ int mode;
+ //BINARY settings
+ double expandCoast;
+ double retractCoast;
+ double island;
+ double lake;
+ int expandCoastDecay;
+ //GRADIENT settings
+ double base; //Base positive random number probability; default: 0.5
+ double factor; //Positive random number factor; default: 0.4
+ double change; //Change multiplier; default: 0.1
+ //EMPIRES settings
+ color* empireColors;
+ int numEmpires;
+ int showMapGen;
+} map_state;
+
+void overlay(double** dest, double** src, int src_x, int src_y, int src_width, int src_height)
+{
+ int x, y;
+ for (y = src_y; y < src_y + src_height; y++)
+ for (x = src_x; x < src_x + src_width; x++)
+ dest[y][x] = src[y-src_y][x-src_x];
+}
+
+double** getLetter(char letter)
+{
+ char* filePath;
+ if (letter == ' ')
+ {
+ filePath = "images/space.ppm";
+ }
+ else
+ {
+ filePath = malloc(16);
+ sprintf(filePath, "images/%c.ppm", letter);
+ }
+ char* data = readFile(filePath);
+ double** img = malloc(LETTER_HEIGHT * sizeof(double*));
+ int i;
+ for (i = 0; i < LETTER_HEIGHT; i++)
+ img[i] = malloc(LETTER_WIDTH * sizeof(double));
+ for (i = 0; i < LETTER_HEIGHT * LETTER_WIDTH; i++)
+ img[i / LETTER_HEIGHT][i % LETTER_HEIGHT] = (double)((unsigned char) data[i * 3 + PPM_START] / 255 + BLACK);
+
+ return img;
+}
+
+
+void writeChar(double** dest, char letter, int x, int y)
+{
+ double** l = getLetter(letter);
+ overlay(dest, l, x, y, LETTER_WIDTH, LETTER_HEIGHT);
+}
+
+void writeString(double** dest, char* s, int x, int y)
+{
+ int i;
+ for (i = 0; i < strlen(s); i++)
+ {
+ writeChar(dest, s[i], x+LETTER_WIDTH*i, y);
+ }
+}
+
+// Convert a map to a .ppm file
+char* writePPM(map_state* ms, char* start, int binaryModeOverride)
+{
+ if (ms->mode < 2 && !binaryModeOverride)
+ {
+ int x, y;
+ char r, g, b;
+ int string_pos = strlen(start);
+ double** map = ms->map;
+
+ memcpy(ms->contents, start, strlen(start));
+
+ for (y = 0; y < ms->height; y++)
+ {
+ for (x = 0; x < ms->width; x++)
+ {
+ if (map[y][x] == -2)
+ {
+ ms->contents[string_pos++] = 1;
+ ms->contents[string_pos++] = 1;
+ ms->contents[string_pos++] = 1;
+ }
+ else if (map[y][x] == -1)
+ {
+ ms->contents[string_pos++] = 255;
+ ms->contents[string_pos++] = 255;
+ ms->contents[string_pos++] = 255;
+ }
+ else
+ {
+ r = (char)(LANDR * map[y][x] + WATERR * (1-map[y][x]));
+ g = (char)((ms->mode == GRADIENT ? 255 : LANDG) * map[y][x] + WATERG * (1-map[y][x])); // For gradient mode, LANDG should be 255
+ b = (char)(LANDB * map[y][x] + WATERB * (1-map[y][x]));
+ ms->contents[string_pos++] = r == 0 ? 1: r;
+ ms->contents[string_pos++] = g == 0 ? 1 : g;
+ ms->contents[string_pos++] = b == 0 ? 1 : b;
+ }
+ }
+ }
+ ms->contents[string_pos] = 0;
+
+ return ms->contents;
+ }
+ else
+ {
+ int x, y;
+ color col;
+ char r, g, b;
+ int string_pos = strlen(start);
+
+ memcpy(ms->contents, start, strlen(start));
+ for (y = 0; y < ms->height; y++)
+ {
+ for (x = 0; x < ms->width; x++)
+ {
+ col = ms->empireColors[(int)ms->newMap[y][x]];
+
+ r = (char)(col.r * 255);
+ g = (char)(col.g * 255);
+ b = (char)(col.b * 255);
+ ms->contents[string_pos++] = r == 0 ? 1 : r;
+ ms->contents[string_pos++] = g == 0 ? 1 : g;
+ ms->contents[string_pos++] = b == 0 ? 1 : b;
+ }
+ }
+ ms->contents[string_pos] = 0;
+
+ return ms->contents;
+ }
+}
+
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